How many times does the word "evolution" (or form of it) used in Darwin's book, "On the Origin of Species" A. Never
B. 1 time in the whole book
C. 1 time each chapter
D. 1 time each page
E. 1 time each paragraph

Why does the skin of your finger shrink when you wash clothes for a long time?

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !

Which of the following molecules could pass through the plasma membrane by simple diffusion? a. na+ ions b. glucose c. amino acids d. carbon dioxide